Vikeri Ultra-thin Amplified Indoor TV Antenna-50 Mile Range for Digital HDTV with USB Power Supply and 16.5 Feet(5m) Coaxial Cable - Black/White This indoor hd tv antenna brings you FREE access to over-the-air digital TV broadcast channels (e.g. from ABC, CBS, NBC, PBS, FOX) in full 1080P.Support receiving both VHF(170-240 MHz)and UHF(470-860 MHz)channnels which enable you to receive High Definition TV signals from all stations, providing you with opportunities to watch crystal clear digital & HD shows! Please note that you may not able to receive the low frequency channels or you may pick up some signals never been received before. Easily connected and powered by USB cable or DTV set-top box via coaxial cable, which enable to strengthen the signals,with maximum range reaches up to 50 miles (80km).Super Thin design along with a 16.5 feet coaxial cable allows you to place it almost anywhere ( Table, Window, Wall ). Works with any HDTV or devices that have built-in ATSC tuner include HDTVs, laptops, PCs. You need only go through your TV manual to make sure that your devices'menu has an option for scanning digital channels. Channel reception will vary depending on what's being broadcast in your area, how far away you are from broadcast towers, and obstructions between you and the towers.If the reception is poor, it may be because the TV is not in the correct mode or there may be obstructions between the antenna and the broadcast tower. To fix these issues, try re-positioning the antenna and re-scanning for the channels. Placing the antenna higher or closer to a window. 12-month warranty makes you worry-free for any quality-related issues.